41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
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import { DateTime } from "luxon";
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export default function(eleventyConfig) {
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eleventyConfig.addFilter("readableDate", (dateObj, format, zone) => {
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// Formatting tokens for Luxon: https://moment.github.io/luxon/#/formatting?id=table-of-tokens
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return DateTime.fromJSDate(dateObj, { zone: zone || "utc" }).toFormat(format || "dd LLLL yyyy");
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});
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eleventyConfig.addFilter("htmlDateString", (dateObj) => {
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// dateObj input: https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
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return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('yyyy-LL-dd');
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});
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// Get the first `n` elements of a collection.
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eleventyConfig.addFilter("head", (array, n) => {
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if(!Array.isArray(array) || array.length === 0) {
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return [];
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}
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if( n < 0 ) {
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return array.slice(n);
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}
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return array.slice(0, n);
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});
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// Return the smallest number argument
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eleventyConfig.addFilter("min", (...numbers) => {
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return Math.min.apply(null, numbers);
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});
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// Return the keys used in an object
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eleventyConfig.addFilter("getKeys", target => {
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return Object.keys(target);
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});
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eleventyConfig.addFilter("filterTagList", function filterTagList(tags) {
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return (tags || []).filter(tag => ["all", "posts"].indexOf(tag) === -1);
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});
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};
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